Improvement in wheel-plows



JOHN H. @L SAMUEL HOBBINS.

Improvement in Wheel Plow.

NG.123,2Q4 Vij'l Patentedjan.30,872.-

, y www; gg-l 14/ JOHN H. ROBBINS AND SAMUEL ROBBIN S, OF BETHEL,OREGON.

IMPROVEMENT IN WHEEL-PLOWS.

Specification forming part of Letters Patent No. 123,294, dated January30, 1872.

Specification describing Improved Riding- Plow, invented by JOHN H.ROBBINS and SAMUEL ROBBINS, of Bethel, in the county of Polk and Stateof Oregon.

The. invention will iirst be fully described and then clearly pointedout in the' claim.

Figure l is a plan; Fig. 2, a front, Fig. 3, av rear view of my improvedriding'plow.

A is the pole, on each side ot' which a horse is to be placed, which ispivoted at a, and which is also provided with an end-perforatedextension plate, a2. B is a transverse and recessed socket, attached toa frame, O, and perforated at the points Z), through which passes boltb. By changing the position of the tongue later'- ally, and also thebolt b', a greater or less width of furrow may be obtained. D is theplow-beam, having a rigid arm, D1, and pivoted one D2. Near the end isplaced the turnplow E, while at the end and to one'side there of isattached a yoke d. This yoke passes over the end of rigid piece D1, andis provided with a set screw, d', protruding upwardly through thebottom. By causing the. screw d to protrude a certain distance throughthe yoke the sole of the. plow will run in a horizontal plane; but whenthe under side of the point of share becomes dubbed ott" by attritionthe plow has a tendency to run too shallow. In order to overcome thistendency it is necessary to increase the pitch of the plow or to give ita small incline to a horizontal plane.

. This is easily and quickly accomplished by slightly withdrawing thescrew d', and lessening the inclination of piece D1. F is another yoke,attached to the front of frame C, a-nd apertured at several points oneach side. f is a pivot-pin, which passes through one of these holes oneach side, and laterally through end ot' beam. G is a lever-frame,fulcrumed in bearings g g, having extension g1, that is held at variouspoints in a rack`plate, H, and projecting goose-neck g2, from which is apendent hook, g3. g4 is a cha-in attached to the end of rigid piece D1of bea-m. By changing the position of beam, that of front pivot-pin f,and hooking the chain I at a corresponding point, the horizontalposition of the plow is also changed, and it is made to run at a greateror less depth, according to requirement. K is the axle, bent downward toform a central yoke, k, whose sides may cause the plow-beam and its plowto be always properly and rigid- 1y aligned.

Haring thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

. The adjustable front yoke F and pinf, and the lever-frame G g2, havinghook g3, combined with beam D D1 D2, having chain gt3-all arranged asand for the purpose described.

Jon-N n. noBBiNs. [1.. s] SAMUEL noBBrNs. [1.. s]

Witnesses:

J. C. GoorER, J. H. HAwLEY.

